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Mailbox Conversion Kinyomtatja ezt a cikket
Overview:
This interface allows you to convert the mailbox format for email addresses on a cPanel account.
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The maildir format uses flat files, which cause systems with large mail archives to exhaust their inode resources quickly.
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The mdbox format stores multiple messages in a file and uses a simpler indexing scheme. This format requires fewer files, reduces inode usage significantly, and decreases disk space usage.
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Unlike the maildir format, the mdbox format does not support symlinks.
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For example, when a cPanel account owner uses Webmail on an account that uses the maildir format, the system displays every mailbox of the account’s email users. However, on a cPanel account that uses the mdbox format, the system only displays the cPanel account’s mailbox. The system does not display the mailboxes of the cPanel account’s other email users.
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For more information about symlinks in Dovecot®, read Dovecot’s Symlinks documentation.
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When you convert from one mailbox format to another, the unique identifier (UID) for each email message on the server will change. The system uses UIDs to identify each message that a POP email account receives. Email clients that do not delete mail from the server use these UIDs to determine which messages to download. Due to this change in UIDs, mailbox conversions can cause POP email users to receive previously-downloaded messages as though they were new.
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If you convert your mailboxes to the maildir format, you may notice a discrepancy between reported and actual disk usage for the default email account. This occurs because a maildir mailbox adds the total default email account usage to the
INBOXdirectory usage of every other email address on the cPanel account. It does not add the subfolders for any other mailbox.
Convert mailboxes
This interface displays a summary of the accounts that use the mdbox and maildir formats. It also lists benefits and limitations for each format.
To convert an account’s mailboxes from one format to the other, perform the following steps:
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Select the desired mailbox format and then click Next.
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Select the checkboxes for each account you wish to convert and then click Next.
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Use the navigation tools at the top of the table to search for and select accounts.
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To return to the previous step in the procedure, click Previous.
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Click Convert to convert the mailboxes for the selected account or accounts.
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To convert the mailboxes and keep the files for the old format, select Keep old mailbox files.
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To return to the previous step in the procedure, click Previous.
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After you click Convert, the interface displays the status and progress of the conversion of mailboxes, and any warnings.
Conversion directories
When you convert mailboxes, the system creates the /storage directory in the following directories for each email account:
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userrepresents the cPanel account’s user.domainrepresents the domain.emailaccountrepresents the email account.
In these directories, the system stores all of the email addresses that the account received before you converted the mailbox’s format.
/storage directory. Additionally, if you convert an account’s mailboxes from the maildir format to the mdbox format, do not delete the /mailboxes directory. The system requires these directories.
Create disk space
The system does not include the /storage directory’s contents when it determines a cPanel account’s email account usage. However, the system does include this directory’s contents when it determines a cPanel account’s disk space usage.
The mdbox format
To create disk space after you convert your mailboxes to the mdbox format, delete the following files:
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The maildir format
To create disk space after you convert your mailboxes to the maildir format, delete the /mailboxes directory.
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